Horizontal alkali-cellulose press



June 14, 1932. w. DUTZMANN 1,363,399

HORIZONTAL ALKALI CELLULOSE PRESS Filed April 17, 1.930 3 Sheets-Sheet 1 21 nve n to r Wilhelm Duiimann HHorneg June 14, w UT N HORIZONTAL ALKALI CELLULOSE PRESS Filed April 17. 1950 3 Sheets-Sheet 2 Unvento r Wflhelm Dilfzmann fitkornelg June 14, 1932. w. DUTZMANN 1,863,399

HORIZONTAL ALKALI CELLULOSE PRESS Filed April 17, 1950 3 Sheets-Sheet 3 Qnvenkor Wilhelm Diltimann Hklo rneg Patented June 14, 1932 UNITED STATES WILHELM Dl TTZMANN, F NEUSTADT, GERMANY .HORIZONTAL ALKALI-GELLUL OSE PRESS Application filed April 17, 1930, Serial No. 445,105, and in Germany November 4, 1929.

The present invention relates to a horizon- 7 plicity in mechanical construction and by low cost'of manufacture;

In the known presses of a similar character the dipping container extends to the thrust bearing and the rear wall of the dipping con- 10 tainer resting against this is replaced or closed and packed, a wall (slide) movable vertically up and down, which is supported by the thrust hearing. If the movable rear wall of the dipping container is removed (raised) the contents of the container (viz. the cellulose and the sheet metal plates and partitions supporting the cellulose between them) may be removed rearwardly through the suitably apertured thrust bearing in the in longitudinal direction of the container. By

reason of this movable rear wall of the dipping container considerable diiliculties are met with in closing the latter in a fluid tight manner. The partitions when moved out of the container and outside the latter are also insutliciently guided. In comparison therewith there are obtained the advantages above referred to by extending the dipping trough as a whole through a distance suitable for the ejection of the treated sheets of cellulose from the dipping container and at the point at which the extension of the dipping trough commences an aperture (fall opening) is provided in the bottom of the container adapted to be closed in a fluid tight manner by suitable members such as slides flaps or the like, whilst the thrust bearing is arranged on the rear wall of the extended dipping container or directly behind the falldrawings Fig. 3 is a plan of Fig. 1.

Fig. i isa sectional view partly in elevation illustrating a further form of the invention.

Fig. 5 is a corresponding plan.

The dipping container a is according to the invention extended through the frame and in comparison with previous constructions by the portion a so that the rear wall a of the container is no longer in front (as re- 0 gards Fig. 1) but-behindthe thrust hearing. The trough is provided in the known manner with four guide rails 0 with which engage the partitions d between which. the cellulose sheets (not shown) are supported and 5 guided. These guide rails extend without in terruptionto the rear wall a of the dipping container. At some distance from-'the'rear wall a and in front of the apertured thrust bearing the bottom a is provided with an 7 aperture a and above this aperture is a suitably strong supporting plate 6, arranged to be moved vertically up and down by means of a liquid cylinder 7 and a pulling member f engagingwith its wedge shaped foot 6 in a correspondingly shaped frame member 9 in a fluid tight manner, the latter being secured in a fluid tight manner to the bottom a of the dipping container, underneath the fall opening a and bearing against the foot of the thrust bearing 6. e is a rubber packing. This may also be provided on a closure member separate from the foot 6 of the slide 6, which member closes the supporting frame 9 in a fluid tight manner from underneath. As will be seen in Fig. 3, the movable thrust bearing 6 is only made wide enough to enable the guide rails 0 to extend to the rear wall a of the dipping container a without interruption. The press is operated in the manner that with the partitions in the position shown in Fig. l'the cellulose sheets are inserted and the trough closed at its fall opening by the supporting plate 0. Through the tubular member hlye can be now admitted and the chemical treatment and soaking of the cellulose sheets carried out. When this has been done the lye is allowed to flow out through the member a and the pressure head is ad:

vanced by the hydraulic press until the pressing out of the sheets has been effected. The latter by reason of the heavy pressure plate 6 are now directly supported against the thrust bearing 1). When the'pressure plate 6 is removed and the pressure head 70 advanced further the partitions pass into'the extension portion a of the dipping trough whilst the treated cellulose sheets fall through the fall opening a and the bottom opening at clownwardly into a truck provided underneath. When all the partitions are in the extension a the trough is empty and byretracting the pressure head is it is possible, as the partitions (Z are connected together by four chains 72 and to the part k toreturn them into the position shown in Fig. 1. y

In the construction shown in Figs. 4 and 5 the thrustbearing Y), which in the known manner is not apertured, is located behind the 5 rear wall a of the extended dipping container and at a suitable distance from the rear wall a there is provided the fall opening closed by a flap p, the latter being. capable of being closed in a fluidtight manner against the fall openin'gforopened downwardly by a weighted link mechanism 9. In this form of construction after allowing the lye to flow out the partitions .are first moved against the rear Wall a together with thecellulose sheets and r the pressing takes place in this position.

The pressure head is then again retracted when, with the flap 9 open, the cellulose sheets fall out, whilst the partitions d, guided by the rails 0, again return to their initial position when the press can again be charged. The construction of the fall opening a and of the corresponding closing means and the actuation thereof may be modified according to the particular requirements without departing from the scope of the invention.

WVhat I claim is:

1. In a horizontal alkali-cellulose press in combination with a dipping trough, having .an exit opening and a thrust bearing, ar-

ranged behindthe exit opening, a supporting plate, having its bearing at the thrust bearing, a closing member for closing the exit opening and being directly attached to the supporting plate, and means for moving the supporting plate up and down, together with the closing member.

2. In a horizontal alkali-cellulose press including a dippingtrough formed with an exit opening, a thrust bearing for the trough arranged immediately adjacent the exit opening, and means for. selectively closing said exit opening, said means serving as a limit for trough for exerting pressure on said parti-.

tions and material included therebetween, means in the trough for guiding the partitions, and an element serving to selectively close said exit opening, said element extending transverse the trough within the partition guiding means to provide an abutment for the pressure limit movement of the partitions. V

In testimony whereof I atfix my signature.

WVILHELM I DUTZMANN.

the pressing operations and held against the thrust bearing.

8. In a. horizontal alkali-cellulose press, a dipping trough formed with an exit opening, a plurality of material-receiving partitions in said trough, means for exerting pressure'on movement under such pressing operations by 

